<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
		<link rel="stylesheet" type="text/css" href="css/bootstrap.min.css"/>
		<title></title>
	</head>
	<body>
		<!-- kbd  =>  keybord -->
		<p><kbd>ctrl + v</kbd>是粘贴的快捷方式</p>
		<p><var>x <sup>2</sup> + y <sup>2</sup> =36</var></p>
		<!-- 左右 < > -->
		<code>&lt;br&gt;</code>
	</body>
</html>
